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A hacker hasn't hit another computer server at Ohio State University. But the school has sent
226,000 letters, mostly to alumni, in the past couple of weeks about free credit-monitoring
services.

Ohio State uncovered a breach in late October and began notifying people whose data might be at
risk. The original list of 760,000 students, professors and others who do business with Ohio State
contained some outdated addresses, officials said yesterday. So the university recently has sent
out new letters to what officials hope are their current addresses.

On Dec. 15, campus officials started notifying current and former students, employees and
businesses that their names and Social Security numbers might have made it to cyberspace in one of
the largest and most costly breaches to hit a college campus.

Ohio State expects to spend about $4 million to pay for the forensic investigation and
credit-protection services for those whose personal information was on the server that was
hacked.

Lynch said there is still no indication that any personal information was taken, but the
university is still offering 12 months of free credit-monitoring service through Experian as a
precaution. People who have been contacted about the breach have until June 30 to sign up.